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Verdich [7]
2 years ago
6

Is there a project idea, or invention that would be good for my class.

Engineering
2 answers:
blsea [12.9K]2 years ago
6 0

Answer:

static electricity

Explanation:

depending on what grade u are on

the reason why is because of that answer is because it sticks to your hair and u can zap people a little a least it feels like a pinch

Troyanec [42]2 years ago
3 0

Answer:

Explanation:

A torch with an additional bulb. ...

Wheel chair convertible to crutches. ...

Pen to check concentration. ...

Bulb/CFL remover/connector. ...

Multicolor headphone wires. ...

Adjustable electricity extension board. ...

Automatic blade swinging ceiling fan for easy cleaning

You might be interested in
A tank contains liquid nitrogen at -190℃ is suspended in a vacuum shell by three stainless steel rods 0.80 cm in diameter and 3
Svetach [21]

Answer:

C) 0.182 W

Explanation:

The effective conductive section is:

3 * A = 3 * \frac{\pi * d^2}{4} = 3 * \frac{\pi * (0.008 m)^2}{4} = 1.5e-4 m^2

The thermal conductivity of stainless steel is

k = 18 w/(m * K)

Heat conduction in a rod follows this equation:

q = k * A * \frac{(t2 - t1)}{l} = 18 * 1.5e-4 * \frac{(15 - (-190))}{3} = 0.182 W

7 0
3 years ago
Is there a project idea, or invention that would be good for<br> my class.
Troyanec [42]

Answer:

Explanation:

A torch with an additional bulb. ...

Wheel chair convertible to crutches. ...

Pen to check concentration. ...

Bulb/CFL remover/connector. ...

Multicolor headphone wires. ...

Adjustable electricity extension board. ...

Automatic blade swinging ceiling fan for easy cleaning

3 0
2 years ago
Read 2 more answers
What is the different between isometric view and isometric projection
yanalaym [24]

Answer:

All the dimensions in the isometric drawing are actual while when in the Isometric projection due to this it has to be the isometric scale is to be used.

7 0
2 years ago
You are an engineer working in a auto crash test lab. Some members of your team have raised objections against the use of cadave
Nikolay [14]

Answer: Application.

Explanation:

The question on wether to contine the use of cadavers in the lab for test is being centered around its application. Cadaver which is same as a corpse or dead body is used in crash site during automobil test in lab, some of this cadavers are been disrespected with their applications in the automobile industries because many didn’t consent to be used in those experiments or test.

5 0
3 years ago
The water in a large lake is to be used to generate electricity by the installation of a hydraulic turbine-generator at a locati
Lynna [10]

Answer:

a) 0.76

b) 0.80

c) 1964 kW

Explanation:

GIVEN DATA:

\dot m = 5000 kg/s

Assume Mechanical energy at exist is negligible

A) Take lake bottom as reference, and then kinetic and potential energy  are taken as zero.

change in mechanical energy is givrn as

e_{in} - e_{out} = \frac{P}{\rho} - 0 = gh = 9.81 \times 50( \frac{1 kJ/kg}{1000 m^2/s^2}

                         = 0.491 kJ/kg

\Delta \dot E_{mec} = \dot m (e_{in} - e_{out}) = 5000 \times 0.491 = 2455 kW

\eta_{OVERALL}  = \frac{\dot W}{\Delta \dot E_{mec}} = \frac{1862}{2455} = 0.76

B) \eta -{gen} = \frac{\eta_{overall}}{\eta_{gen}} = \frac{0.76}{0.95} = 0.80

c) \dot W_{shaft} = \eta_{overall} \left | \Delta \dot E_{mec} \right | = 0.80(2455)

\dot W_{shaft} = 1964 kW

7 0
3 years ago
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